> Formula: C2BF2LiO4
> Weight: 143.77
> Appearance: White powder
>Storage: Preserve in a well-closed container and keep in cool,
> Danger Description:
> Safety Description:
> Danger Symbol:
> Shelf life:two years
A.Nonaqueous electrolyte compositions
B.Non-aqueous electrolyte for lithium-ion battery
A. biology/biochemistry laboratory, pharmaceutical factory,
Chlorine,Calcium and Sodium,ppm
Lithium difluoro(oxalato)borate;Lithium difluoro(oxalato)borate(1-);LithiuM Oxalyldifluoroborate
The determination of KF
Use MA-1 intelligent Carle Fischer moisture tester to measure water
Determination of melting point
Micro melting point apparatus WRS-2A, Melting point tubes
Determination of step:
Open switch, stable 20min.
First set the starting temperature than the melting point of the
low 10 ℃, heating rate 2 ℃ / min.
The sample was grind as fine as possible and load in a clean, dry
melting point pipe ,until the sample was compressed into about 1cm
high .When the actual temperature reaches the set temperature and
stabilized . Inserted into the capillary with the sample, the
simultaneous determination of three.
Determination of iron content
Preparation of standard iron solution
Weigh ammonium iron(III) sulfate [FeNH4(SO4)2·12H2O] 0.863g .Placed
in 1000mL volumetric flask, add water to dissolveand add sulfuric
acid 2.5mL.Diluted with water to the mark, shake, as the stock
Before use, exact amount of stock solution 1mL, placed in 100mL
flask, diluted with water to the mark and shake.
Weigh 1g sample, placed in a crucible.Adding sodium carbonate 2g
and mixed.Burning at 740 ℃,the residue is dissolved in dilute
hydrochloric acid 15ml , displacing 50mL Nessler colorimetric tube
, add dilute hydrochloric acid 4mL and ammonium persulfate 50mg ,
Diluted with water to make into 35mL, add 30% ammonium thiocyanate
solution 3mL, plus the amount of water diluted into 50mL, shaked.
If the color, take 1mL standard iron solution into 50mL Nessler
colorimetric tube, add water to 25mL,4mL dilute hydrochloric acid
and 50mg ammonium persulfate , diluted with water to 35mL, then
plus 30% ammonium thiocyanate solution 3mL, plus the amount of
water diluted into 50mL, shake comparisons.